CVE-2021-25083 Registrations for the Events Calendar < 2.7.10 - Reflected Cross-Site Scripting

What is CVE-2021-25083?

CVE-2021-25083 is a medium-severity cross-site scripting vulnerability in Unknown Registrations for the Events Calendar – Event Registration Plugin, published on 24 Jan 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The Registrations for the Events Calendar WordPress plugin before 2.7.10 does not escape the qtype parameter before outputting it back in an attribute in the settings page, leading to a Reflected Cross-Site Scripting

Weakness: CWE-79

Which versions are affected by CVE-2021-25083?

It affects 1 product.

Products include Roundupwp Registrations for the Events Calendar.

How do I fix CVE-2021-25083?

No fix has been published for CVE-2021-25083 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2021-25083 being exploited?

There is no known exploitation of CVE-2021-25083 in the wild and no public exploit code.

Other vulnerabilities in Unknown Registrations for the Events Calendar – Event Registration Plugin

• CVE-2021-24943 Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection Critical 9.8
• CVE-2024-7982 Registrations for The Events Calendar < 2.12.4 - Unauthenticated Stored XSS Critical 9.6
• CVE-2024-39638 WordPress Registrations for the Events Calendar plugin <= 2.12.2 - SQL Injection vulnerability High 8.5
• CVE-2024-10703 Registrations for The Events Calendar < 2.13.4 - Admin+ Stored XSS Medium 6.1
• CVE-2021-24876 Registrations for The Events Calendar < 2.7.5 - Reflected Cross-Site Scripting Medium 6.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-57q9-jqvx-2qj7.